Prosecutors in the eastern German city of Halle said on Friday that they have charged a man with allegedly planning a right-wing extremist attack with a homemade bomb. The man, who was 36 at the time, is accused of preparing a serious act of violence endangering the state, among other charges, a spokesman for the prosecutor’s office told dpa. Following an incident in April, when the man was arrested after brandishing an apparent handgun, investigators discovered a 7-kilogram homemade explosive device in a silver suitcase. There are grounds to assume that the man “wanted to use the bomb for rig…